formbook | 8c41a444478b203f5df1d1f74609057c499e885fe6050a8bd1cf5f0743ab6cee

Analysis

max time kernel
147s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-01-2025 07:54

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General

Target

8C41A444478B203F5DF1D1F74609057C499E885FE6050A8BD1CF5F0743AB6CEE.exe
Size

1.1MB
MD5

47707710ceef8190cd4cd7e4fd28591b
SHA1

a3e81115d9e6f3927de11aefe377fc5d1ee85854
SHA256

8c41a444478b203f5df1d1f74609057c499e885fe6050a8bd1cf5f0743ab6cee
SHA512

3b2a2a7401219a9fb817a41ee3077d6caa01a4d9de2cbb0af1cd49059d974c4a4f6f5c93f4142b1c035fc31eeb60f8470664679c5f66770d6a314315596e16c6
SSDEEP

24576:7qDEvCTbMWu7rQYlBQcBiT6rprG8aHTZAwh3bYn:7TvC/MTQYxsWR7aHtAg

Score

10^/10

formbook ba94 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

ba94

Decoy

dxtra.shop

upfromhere-eventsdecor.com

blacksevenkoeln.shop

pcboards2024.xyz

posteo.lol

naservus.com

pivotance.com

90ans.com

ebenezer-remodeling.com

reddragondao.com

gspotshop.com

thesiamesebetta.biz

rrdhq.com

greenislandservices.info

prismotrov.com

elaqbh.shop

sosenfantscovidlong.com

elmsolarsavings.com

sol-casino-2023.club

sharecroipper.top

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Formbook family
formbook

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral2/memory/4200-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4200-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4200-18-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2520-26-0x00000000007C0000-0x00000000007EF000-memory.dmp	formbook

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 972 set thread context of 4200	972	8C41A444478B203F5DF1D1F74609057C499E885FE6050A8BD1CF5F0743AB6CEE.exe	82
PID 4200 set thread context of 3520	4200	svchost.exe	56
PID 4200 set thread context of 3520	4200	svchost.exe	56
PID 2520 set thread context of 3520	2520	mstsc.exe	56

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mstsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8C41A444478B203F5DF1D1F74609057C499E885FE6050A8BD1CF5F0743AB6CEE.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 60 IoCs

pid	Process
4200	svchost.exe
4200	svchost.exe
4200	svchost.exe
4200	svchost.exe
4200	svchost.exe
4200	svchost.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe
2520	mstsc.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
972	8C41A444478B203F5DF1D1F74609057C499E885FE6050A8BD1CF5F0743AB6CEE.exe
4200	svchost.exe
4200	svchost.exe
4200	svchost.exe
4200	svchost.exe
2520	mstsc.exe
2520	mstsc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4200	svchost.exe
Token: SeDebugPrivilege	2520	mstsc.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 972 wrote to memory of 4200	972	8C41A444478B203F5DF1D1F74609057C499E885FE6050A8BD1CF5F0743AB6CEE.exe	82
PID 972 wrote to memory of 4200	972	8C41A444478B203F5DF1D1F74609057C499E885FE6050A8BD1CF5F0743AB6CEE.exe	82
PID 972 wrote to memory of 4200	972	8C41A444478B203F5DF1D1F74609057C499E885FE6050A8BD1CF5F0743AB6CEE.exe	82
PID 972 wrote to memory of 4200	972	8C41A444478B203F5DF1D1F74609057C499E885FE6050A8BD1CF5F0743AB6CEE.exe	82
PID 4200 wrote to memory of 2520	4200	svchost.exe	87
PID 4200 wrote to memory of 2520	4200	svchost.exe	87
PID 4200 wrote to memory of 2520	4200	svchost.exe	87
PID 2520 wrote to memory of 2704	2520	mstsc.exe	88
PID 2520 wrote to memory of 2704	2520	mstsc.exe	88
PID 2520 wrote to memory of 2704	2520	mstsc.exe	88

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3520
- C:\Users\Admin\AppData\Local\Temp\8C41A444478B203F5DF1D1F74609057C499E885FE6050A8BD1CF5F0743AB6CEE.exe
  "C:\Users\Admin\AppData\Local\Temp\8C41A444478B203F5DF1D1F74609057C499E885FE6050A8BD1CF5F0743AB6CEE.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:972
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\8C41A444478B203F5DF1D1F74609057C499E885FE6050A8BD1CF5F0743AB6CEE.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4200
  - - C:\Windows\SysWOW64\mstsc.exe
      "C:\Windows\SysWOW64\mstsc.exe"
      4⤵
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2520
    - - C:\Windows\SysWOW64\cmd.exe
        
        /c del "C:\Windows\SysWOW64\svchost.exe"
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:2704

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/972-10-0x00000000007B0000-0x00000000007B4000-memory.dmp

Filesize
16KB

Download
memory/2520-24-0x0000000000580000-0x00000000006BA000-memory.dmp

Filesize
1.2MB

Download
memory/2520-26-0x00000000007C0000-0x00000000007EF000-memory.dmp

Filesize
188KB

Download
memory/2520-22-0x0000000000580000-0x00000000006BA000-memory.dmp

Filesize
1.2MB

Download
memory/3520-32-0x00000000091B0000-0x00000000092E8000-memory.dmp

Filesize
1.2MB

Download
memory/3520-30-0x00000000091B0000-0x00000000092E8000-memory.dmp

Filesize
1.2MB

Download
memory/3520-29-0x00000000091B0000-0x00000000092E8000-memory.dmp

Filesize
1.2MB

Download
memory/3520-16-0x0000000003080000-0x0000000003146000-memory.dmp

Filesize
792KB

Download
memory/3520-20-0x0000000008EF0000-0x0000000009080000-memory.dmp

Filesize
1.6MB

Download
memory/3520-25-0x0000000008EF0000-0x0000000009080000-memory.dmp

Filesize
1.6MB

Download
memory/3520-21-0x0000000003080000-0x0000000003146000-memory.dmp

Filesize
792KB

Download
memory/4200-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4200-18-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4200-19-0x00000000038D0000-0x00000000038E5000-memory.dmp

Filesize
84KB

Download
memory/4200-15-0x0000000001F40000-0x0000000001F55000-memory.dmp

Filesize
84KB

Download
memory/4200-12-0x0000000001B00000-0x0000000001E4A000-memory.dmp

Filesize
3.3MB

Download
memory/4200-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download